Perhaps you should try some spelling variations:
"hall robert _. heitmann ebook" » "cull robert _. heitmann ebook", "gal robert _. heitmann ebook", "thiel robert _. heitmann ebook"
"a robert j. land books" » "a robert j. hand books", "a robert j. law books", "a robert j. hand book", "3 robert j. land books", "dr robert j. land books", "a robust j. land books", "a robert e. land books"
"a robert j. land banks" » "a robert j. land bank", "3 robert j. land banks", "dr robert j. land banks", "a robust j. land banks", "a robert e. land banks"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("hall robert _. heitmann ebook") or ((("a robert j. land books") OR ("a robert j. land banks"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("hall robert _. heitmann ebook") OR ((("a robert j. land books") OR ("a robert j. land banks")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"hall robert _. heitmann ebook\") or (((\"a robert j. land books\") OR (\"a robert j. land banks\"))))".
• Removing quotes may allow a broader search: (( hall robert _. heitmann ebook ) or ((( a robert j. land books ) OR ( a robert j. land banks )))).
• Adding a wildcard symbol may retrieve word variants: (("hall robert _. heitmann ebook") or ((("a robert j. land books") OR ("a robert j. land banks"))))*.